A wiper motor assembly structure

Abstract

This utility model relates to the technical field of wiper motors, and discloses a wiper motor assembly structure including a motor and a gearbox. The front end of the motor has a threaded hole, and the outer wall of the front end of the motor is fixedly connected to a sealing strip. The output shaft of the motor has a first fixing hole, and a mounting mechanism is connected to the outer wall of the gearbox. The motor is bolted to the outer frame via the threaded hole at its front end, and both the outer frame and the front end of the motor are fitted with the sealing strip to form a double seal. The mounting mechanism uses a fixing plate connected to the gearbox via bolts, and employs a double mounting method using a locking block on a fixing block and a positioning pin through a second fixing hole on the fixing block. A sleeve-mounted pressure sensor directly monitors the operating pressure, providing more direct overload warnings. This overall design balances protection, installation stability, and fault warning, improving reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of wiper motors, specifically to a wiper motor assembly structure. Background Technology

[0002] Modern wiper motor assemblies have evolved into complex electromechanical systems integrating motor drive, reduction gear transmission, and linkage mechanisms. They primarily employ a design scheme using a permanent magnet DC motor paired with a worm gear reducer, and include core components such as the motor body, reduction mechanism, output shaft, and its bearing system.

[0003] For example, a wiper motor assembly with authorization announcement number "CN221393392U" solves the problem of existing wiper motor assemblies where operators cannot easily detect loose connections between the device and the fixing parts. The aforementioned assembly is mounted on a fixing block via mounting bolts using a mounting bracket. Under the action of a spring, the ball block is pressed against the mounting surface, and a pressure sensor detects the pressure value. However, considering existing wiper motor assemblies where the mounting post relies on a spring and pressure sensor to detect looseness, the spring is prone to fatigue and failure under long-term stress, resulting in inaccurate pressure detection and an inability to detect loose connections promptly. Furthermore, the connection between the mounting bracket and the positioning block relies solely on the positioning groove without additional reinforcement, making it prone to displacement under vibration, affecting the motor's operational stability. The overall structure has weak resistance to wear and tear, resulting in low reliability. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of weak overall structural resistance to wear and low reliability of existing wiper motor assemblies, and to propose a wiper motor assembly structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wiper motor assembly structure, including a motor and a gearbox, wherein the front end of the motor is machined with a threaded hole, the outer wall of the front end of the motor is fixedly connected to a sealing strip, the output shaft of the motor is machined with a first fixing hole, and the outer wall of the gearbox is connected to an installation mechanism.

[0006] This feature includes a threaded hole at the front end of the motor, allowing for secure mounting of the outer frame using bolts. The outer frame's fit snugly against the sealing strip effectively enhances the sealing performance at the motor's front end, preventing rainwater, dust, and other impurities from entering the motor and affecting its normal operation. The first fixing hole machined into the motor's output shaft facilitates precise connection and fixation to the screw drive components inside the gearbox, ensuring stable power transmission.

[0007] Preferably, the mounting mechanism includes a fixing plate, the inner wall of which is threadedly connected to the gearbox by bolts, the outer wall of which is fixedly connected to a fixing block, the outer wall of which is fixedly connected to a sleeve, and the outer side of which is fixedly connected to a locking block.

[0008] This mounting plate is connected to the gearbox with bolts, ensuring a secure assembly between the mounting mechanism and the gearbox. The mounting block can also be used with external mounting brackets to provide a stable support point for the entire wiper motor assembly.

[0009] Preferably, the inner wall of the middle part of the fixing plate is machined with a second fixing hole, and the outer wall of the threaded hole is threadedly connected to the outer frame by bolts.

[0010] The second fixing hole in the middle of the fixing plate can be used to pass a positioning pin, which further improves the accuracy of the connection between the fixing plate and the gearbox and avoids relative displacement between the two due to vibration during motor operation.

[0011] Preferably, the outer wall of the outer frame is fixedly connected to the outer shell of the gearbox, and the outer wall of the gearbox outer shell is threadedly connected to the cover plate by bolts.

[0012] This feature is designed to form an integral protective structure by fixing the outer frame to the gearbox housing. The cover plate is bolted to the outer wall of the gearbox housing, which can effectively seal and protect the gears, worm gears and other transmission components inside the gearbox, preventing external debris from entering and affecting the transmission accuracy. It also facilitates the later inspection and maintenance of the gearbox.

[0013] Preferably, the inner wall of the sleeve is inserted into the pressure sensor.

[0014] The inner wall of this sleeve is connected to the pressure sensor via bolts, thereby enabling overload protection and fault warning for the wiper motor assembly, improving the safety and reliability of the wiper motor assembly under complex operating conditions.

[0015] Preferably, the outer wall of the outer frame is in contact with the sealing strip.

[0016] This feature ensures that the outer wall of the frame fits tightly against the sealing strip, further enhancing the sealing effect at the connection between the motor and the gearbox. Together with the sealing strip at the front of the motor, it forms a double sealing structure, maximizing the prevention of external moisture, dust, and other contaminants from entering, thus ensuring that the wiper motor assembly can operate stably and reliably under various climatic conditions.

[0017] The wiper motor assembly structure proposed in this utility model has the following advantages: the motor front end is bolted to the outer frame through a threaded hole, and the outer frame and the front end of the motor are both fitted with sealing strips to form a double seal. The mounting mechanism uses a fixing plate to connect to the gearbox through bolts, and is equipped with a locking block on the fixing block and a positioning pin through the second fixing hole of the fixing block for double installation. The sleeve-mounted pressure sensor directly monitors the operating pressure, and the overload warning is more direct. It achieves overall protection, installation stability and fault warning, and improves the reliability of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the assembly structure of the intermediate gearbox and mounting mechanism;

[0020] Figure 3 for Figure 1 Schematic diagram of the assembly of the outer frame and gearbox;

[0021] Figure 4 for Figure 1 Schematic diagram of the motor structure;

[0022] Figure 5 for Figure 1 Schematic diagram of the installation mechanism;

[0023] Figure 6 for Figure 1 Enlarged structural diagram of the middle cover plate.

[0024] In the diagram: 1. Motor, 2. Gearbox, 3. Threaded hole, 4. Sealing strip, 5. First fixing hole, 6. Mounting mechanism, 601. Fixing plate, 602. Fixing block, 603. Sleeve, 604. Clamping block, 7. Second fixing hole, 8. Outer frame, 9. Cover plate, 10. Pressure sensor. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Please see Figure 1-6 In this embodiment, a wiper motor assembly structure includes a motor 1 and a gearbox 2. The front end of the motor 1 is machined with a threaded hole 3. The outer wall of the front end of the motor 1 is fixedly connected to a sealing strip 4. The output shaft of the motor 1 is machined with a first fixing hole 5. The outer wall of the gearbox 2 is connected to a mounting mechanism 6.

[0027] The mounting mechanism 6 includes a fixing plate 601. The inner wall of the fixing plate 601 is threadedly connected to the gearbox 2 by bolts. The outer wall of the fixing plate 601 is fixedly connected to the fixing block 602. The outer wall of the fixing plate 601 is fixedly connected to the sleeve 603. The outer side of the fixing plate 601 is fixedly connected to the clamping block 604.

[0028] The front end of the motor 1 is provided with a threaded hole 3 and is bolted to the outer frame 8. The outer frame 8 and the front end of the motor 1 are both fitted with sealing strips 4 to form a double seal. The mounting mechanism 6 uses a fixing plate 601 to connect to the gearbox 2 by bolts. It is installed in a double manner with the locking block 604 on the fixing block 602 and the positioning pin passing through the second fixing hole 7 of the fixing block 602. The sleeve 603 is equipped with a pressure sensor 10 to directly monitor the operating pressure. The overload warning is more direct, and the overall protection, installation stability and fault warning are taken into account, which improves the reliability of use.

[0029] The inner wall of the middle part of the fixing plate 601 is machined with a second fixing hole 7. The outer wall of the threaded hole 3 is threadedly connected to the outer frame 8 by bolts. The outer wall of the outer frame 8 is fixedly connected to the outer shell 2 of the gearbox. The outer wall of the outer shell 2 of the gearbox is threadedly connected to the cover plate 9 by bolts. The inner wall of the sleeve 603 is inserted into the pressure sensor 10. The outer wall of the outer frame 8 is attached to the sealing strip 4.

[0030] Working principle:

[0031] When the wiper motor assembly starts working, after the motor 1 is connected to the external power supply, its output shaft is tightly connected to the transmission components inside the gearbox 2 through the first fixing hole 5 and transmits power. After the gears and worm gears inside the gearbox 2 reduce speed and increase torque, the power is output to drive the wiper blade to reciprocate. Throughout the operation, the sealing strip 4 at the front end of the motor 1 is tightly fitted to the outer frame 8, and the outer wall of the outer frame 8 also forms a double seal with the sealing strip 4, effectively preventing rainwater, dust and other impurities from entering the motor 1 and the gearbox 2.

[0032] The mounting plate 601 in the mounting mechanism 6 is securely connected to the gearbox 2 by bolts. The bolts pass through the second fixing hole 7 on the mounting block 602 and engage with the external mounting bracket via threaded connection, providing stable support. The locking block 604 further enhances the assembly's stability after installation, preventing loosening due to vibration during vehicle operation. The pressure sensor 10 inside the sleeve 603 monitors pressure changes in the motor 1 and gearbox 2 in real time. In case of overload or other abnormal conditions, it can promptly issue a signal to protect the wiper motor assembly.

[0033] In addition, the cover plate 9 on the gearbox housing 2 not only provides sealing protection for the internal transmission components, but also facilitates disassembly and maintenance when needed, greatly improving the reliability and ease of maintenance of the wiper motor assembly.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wiper motor assembly structure, comprising a motor (1) and a gearbox (2), characterized in that: The front end of the motor (1) is machined with a threaded hole (3), the outer wall of the front end of the motor (1) is fixedly connected to the sealing strip (4), the output shaft of the motor (1) is machined with a first fixing hole (5), and the outer wall of the gearbox (2) is connected with an installation mechanism (6).

2. The wiper motor assembly structure of claim 1, wherein: The installation mechanism (6) includes a fixing plate (601), the inner wall of the fixing plate (601) is threadedly connected to the gearbox (2) by bolts, the outer wall of the fixing plate (601) is fixedly connected to the fixing block (602), the outer wall of the fixing plate (601) is fixedly connected to the sleeve (603), and the outer side of the fixing plate (601) is fixedly connected to the clamping block (604).

3. The wiper motor assembly structure of claim 2, wherein: The inner wall of the middle part of the fixing plate (601) is machined with a second fixing hole (7), and the outer wall of the threaded hole (3) is threadedly connected to the outer frame (8) by bolts.

4. The wiper motor assembly structure of claim 3, wherein: The outer wall of the outer frame (8) is fixedly connected to the outer shell of the gearbox (2), and the outer wall of the outer shell of the gearbox (2) is threadedly connected to the cover plate (9) by bolts.

5. The rain sensor motor assembly structure of claim 2, wherein: The inner wall of the sleeve (603) is threadedly connected to the pressure sensor (10) by bolts.

6. The rain sensor motor assembly structure of claim 4, wherein: The outer wall of the outer frame (8) is in contact with the sealing strip (4).

Images